{"product_id":"proof-research-pxt-284-cal-16-5-1-8-twist-sendero-carbon-fiber-prefit-bolt-action-barrel-blank","title":"Proof Research PXT 284 Cal 16.5\" 1:8 Twist Sendero Carbon Fiber Prefit Bolt Action Barrel Blank","description":"\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003eProof Research PXT\u003c\/span\u003e\u003c\/strong\u003e prefit barrel blank is engineered for custom bolt-action rifle builders seeking match-grade accuracy with reduced weight. This \u003cstrong\u003e16.5\"\u003c\/strong\u003e Sendero-contour blank is chambered in \u003cstrong\u003e\u003cspan style=\"background-color: #ffff00;\"\u003e.284 caliber (7mm)\u003c\/span\u003e\u003c\/strong\u003e with a \u003cstrong\u003e1:8\u003c\/strong\u003e twist rate, well-suited to a wide range of high-BC 7mm hunting and long-range bullet weights.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eThe PXT line is purpose-built as a precision prefit for the \u003cstrong\u003eZermatt Origin\u003c\/strong\u003e bolt-action platform, featuring a \u003cstrong\u003e2.5\" PXT breech\u003c\/strong\u003e and a \u003cstrong\u003e1.20\" shank diameter\u003c\/strong\u003e for a clean drop-in fit with no additional machining required. The \u003cstrong\u003eSendero contour\u003c\/strong\u003e balances rigidity and reduced weight, coming in at just \u003cstrong\u003e2 lbs 6 oz\u003c\/strong\u003e - up to 64% lighter than traditional all-steel barrels of similar profile.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eConstructed with a \u003cstrong\u003e416R stainless steel\u003c\/strong\u003e core wrapped in high-modulus \u003cstrong\u003ecarbon fiber\u003c\/strong\u003e, the PXT barrel delivers improved heat dissipation for cooler operation, enhanced shot-to-shot consistency, and exceptional stiffness for repeatable accuracy. The carbon fiber sleeve also provides extreme temperature resistance during extended strings of fire.\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-size: 14pt;\"\u003eManufactured by \u003cstrong\u003eProof Research\u003c\/strong\u003e in the \u003cstrong\u003eUSA\u003c\/strong\u003e, this PXT barrel blank is built for precision rifle builders chasing match-grade performance and lightweight handling in a custom 7mm Zermatt Origin build.\u003c\/span\u003e\u003c\/p\u003e","brand":"Proof Research","offers":[{"title":"Default Title","offer_id":55084079776066,"sku":"198901","price":1002.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0997\/7921\/5682\/files\/hires_14d8e9fb-994c-4b66-a614-6c6067f56a37.png?v=1784768658","url":"https:\/\/centerfiresystems.com\/products\/proof-research-pxt-284-cal-16-5-1-8-twist-sendero-carbon-fiber-prefit-bolt-action-barrel-blank","provider":"Centerfire Systems","version":"1.0","type":"link"}